San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
Can A Rat Hurt A Human?
Rodents are animals that do not represent a direct threat to people. Although they are intelligent, they do not harm for pleasure. Most of the time, they are just bacteria carriers, but they do not spread them with the intention of starting a pandemic. The cases in which rats have harmed children, might have been because at that moment their instinct was activated to survive. Most houses that are invaded by this urban plague is because they do not take necessary preventive measures and rats have easy access to any corner of the house.
Rats vs. people
Man is surrounded by animals that are predators, so over the years, he decided to protect himself and shelter in homes. Some animals are attracted to find refuge in these homes due to the same necessity of protection and food that humans have. Rodents and people in the same house are a bad combination because of the structural and health damage that rodents can cause.
Can a rat make me sick?
Rats are animals whose excrement, urine, and saliva can contain a great number of bacteria damaging for people's health. Among the most well-known diseases are salmonellosis, leptospirosis, and hepatitis. The most common wounds caused by rodents are bites and scratches. An open and deep wound caused by rodents that come in contact with fluid from a rat will be an open door for microorganisms to spread into the bloodstream causing systemic infections that can be severe and even cause death.
In summary, it can be said that rats can hurt humans through infections by having contact with their fluids or can accidently cause scratches and bites through measures of self-defense. On the other hand, people that have a phobia of these little animals may have psychological damage when coming in contact with them.
